Standardize usage of virtual/override/final in remoting/

remoting/host/gnubby_auth_handler_posix_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/timer/mock_timer.h"
 #include "net/socket/stream_listen_socket.h"
 #include "remoting/host/gnubby_auth_handler_posix.h"
 #include "remoting/host/gnubby_socket.h"
@@ skipping 24 matching lines @@
     0x20, 0x3c, 0x00, 0xc6, 0xe1, 0x73, 0x34, 0xe2, 0x23, 0x99, 0xc4, 0xfa,
     0x91, 0xc2, 0xd5, 0x97, 0xc1, 0x8b, 0xd0, 0x3c, 0x13, 0xba, 0xf0, 0xd7,
     0x5e, 0xa3, 0xbc, 0x02, 0x5b, 0xec, 0xe4, 0x4b, 0xae, 0x0e, 0xf2, 0xbd,
     0xc8, 0xaa};
 
 class MockStreamListenSocket : public net::StreamListenSocket {
  public:
   explicit MockStreamListenSocket(net::StreamListenSocket::Delegate* delegate)
       : StreamListenSocket(net::kInvalidSocket, delegate) {}
 
-  virtual void Accept() override { NOTREACHED(); }
+  void Accept() override { NOTREACHED(); }
 
  private:
-  virtual ~MockStreamListenSocket() {}
+  ~MockStreamListenSocket() override {}
 };
 
 }  // namespace
 
 class GnubbyAuthHandlerPosixTest : public testing::Test {
  public:
   GnubbyAuthHandlerPosixTest() {}
 
   virtual void SetUp() override;
 
@@ skipping 97 matching lines @@
   std::string error_json = base::StringPrintf(
       "{\"type\":\"error\",\"connectionId\":%d}",
       auth_handler_posix_->GetConnectionIdForTesting(socket));
 
   ASSERT_TRUE(auth_handler_posix_->HasActiveSocketForTesting(socket));
   auth_handler_->DeliverClientMessage(error_json);
   ASSERT_FALSE(auth_handler_posix_->HasActiveSocketForTesting(socket));
 }
 
 }  // namespace remoting